To create your own themes, you can use some Theme module methods, which help easier change the CSS files of existing themes, which are provided with Classic Edition and which you could use after changing as parts of new themes.
Check out such Theme module methods on following URLs:
There are quite thorough instructions about these methods on these URLs, when you are using them.
In the next subsections the structure of theme directories and files will be explained to create new themes from scratch.
Previous: 2. How to use a custom theme ? | Next: 3.1. Components and minimal requirements of a custom theme
1. How to choose a different theme ?
2. How to use a custom theme ?
3. How to create your own custom themes?
3.1. Components and minimal requirements of a custom theme
3.2. The content of file config/Install/install-config.php
3.3. Content of the layout.phtml file
3.4. CSS selectors for custom themes
4. Conclusions about Allmice CMS themes